2003/06/24 by Bao-Quan Ai, Xian-Ju Wang, Guo-Tao Liu +4
Physics and Astronomy · #physics.bio-ph
paper · pdf · doi:10.1140/epjb/e2004-00089-9
published as Eur. Phys. J. B 37(2004)523-526 · 9 pages, 7 figures
arxiv created 2003/06/24 · arxiv updated 2009/12/01
We present a study of transport of a Brownian particle moving in periodic symmetric potential in the presence of asymmetric unbiased fluctuations. The particle is considered to move in a medium with periodic space dependent friction. By tuning the parameters of the system, the direction of current exhibit reversals, both as a function of temperature as well as the amplitude of rocking force. We found that the mutual interplay between the opposite driving factors is the necessary term for current reversals.